TM 1-1520-238-T-6
9–618
9–319. SHORT – EXISTS BETWEEN (A77)J2–39 AND GROUND
9–319
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
References:
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
Paragraph 9–149
Pilot circuit breaker panel
accessing – completed
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. Detach wire at CB23-1. Check for short between
(A77)J2-39 and ground.
Does short exist?
YES
Repair shorted wire between
(A77)J2-39 and CB23-1.
Go to paragraph 9–317.
NO
Go to step 2.
2. Check for short between CB23-1 and ground.
Does short exist?
YES
Replace MSL L INBD LCHR DC
circuit breaker (CB23)
(TM 1-1520-238-23).
NO
Go to step 3.
3. With CB23 wires attached, detach wires at
CB25-1. Check for short between (A77)J2-39
and ground.
Does short exist?
YES
Repair shorted wire between
CB23-1 and CB25-1.
Go to paragraph 9–317.
NO
Go to step 4.
4. Check for short between CB25-1 and ground.
Does short exist?
YES
Replace MSL L OUTBD LCHR
DC circuit breaker (CB25)
(TM 1-1520-238-23).
NO
Go to step 5.
5. With CB25 wires attached, detach wires at
CB27-1. Check for short between (A77)J2-39
and ground.
Does short exist?
YES
Repair shorted wire between
CB25-1 and CB27-1.
Go to paragraph 9–317.
NO
Go to step 6.
6. Check for short between CB27-1 and ground.
Does short exist?
YES
Replace MSL ARM circuit
breaker (CB27)
(TM 1-1520-238-23).
NO
Go to step 7.
7. With CB27 wires attached, detach wires at
CB22-1. Check for short between (A77)J2-39
and ground.
Does short exist?
YES
Repair shorted wire between
CB27-1 and CB22-1.
Go to paragraph 9–317.
NO
Go to step 8.
